Federal signal model O/V siren unboxing and tests! With rare “plate” grille

This is definitely the weirdest siren if it’s type! Almost certainly custom order! This siren has a “plate” grille. Which was put on some early models and likely still available for custom order later. There are only a couple examples out there. It’s like the jailbar of these things! Join my discord! (We need members!)   / discord   #jesus #siren #airraidsirens #loud #unboxing #rare #fyp #viral